Find the Coil Springs you need to upgrade or repair the suspension on your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax. The load capacity of your truck will be increased by a number of the springs available to accommodate items like snowplows and winches. In addition to increase load capacity, some lift coils will raise the front of your truck to level it out and give it a more aggressive appearance. Get superior quality manufacturers including brands like SuperSprings and Eibach.